Door operating and locking device.



L. G. NORTON.

DOOR OPERATING AND LOOKING DEVICE.

APPLICATION FILED MAY 23, 1914.

Patented Feb. 16, 1915.

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lnvenror Lewis G. Norfon i'inesses.

LEWIS C. NORTON, OF CHICAGO, ILLINOIS, ASSIGNOR TO NORTON DOOR- CHECK OOMPAINY, OF GHICAGO, ILLINOIS, A CORPORATION OF WEST VIRGINIA.

DOOR OPERATING AND LOCKING DEVICE.

Specification of Letters Patent.

Patented Feb. 16, 1915.

Application filed May 23, 1914. Serial No. 840,639.

To all whom it may concern:

' Be it known that I, Lewis G. NORTON, a citizen of the United States, residing at Chicago,-county ofCook, State of Illinois, have invented an Improvement inDoor Operating and'Locking Devices, of which the following description, in connection with the accompanying drawing, is a specification, like characters on the drawing representing like parts.

This invention relates to controlling mechanism for sliding doors and particularly to controlling mechanism of that type which includes a toggle lever device, one member of which is pivotally connectedto the door and the other member of which is pivotally connected to a fixed abutment.

The object of the invention is to provide a novel handle device for breaking the toggle lever and opening the door, all as will be more fully hereinafter described and then pointed out in the appended claims.

The drawings illustrate some selected embodiments of my invention from which the principle can be readily ascertained.

Figure 1 is a view showing a device embodying my invention; Fig. 2 is a fragmentary view showing a diflerent construction also embodying my invention; Fig. 3 is asection on the line w-w, Fig- 2; Fig. 4 is an end view of the handle device shown. in Fig. 2.

1 indicates a sliding door which may be the door of an elevator well or any other sliding door. The toggle-lever device by which the door is operated comprises the member 2 which is pivoted to the door at 3 and the member 4 which is pivoted to a fixed abutment at 5, said members 2 and 4 being pivotally connected together at 6.

7 designates a door closer and check which. is connected to the member 4 and which operates to close the door automatically and to check its closing movement. The toggle lever device 2, 4 is so constructed that when the door is closed the two members are in'alinement, as shown in Fig. 1, thus locking the door'closed. In order to openthe door the toggle lever must be first broken and it is customary in devices of this nature to provide a handle connected to the door 1 and having such a relation to the toggle lever mechanism that the first movement of the handle will break the toggle lever, while continued movement of the handle will open the door.- The handle 1 have shown for thus purpose and which forms the subject of this application is one whiclP is normally free and disconnected from the toggle lever device, but which can be clutched or connected to the toggle member 2 when the door is to be opened. This handle is shown at 8 and it is illustrated as a lever which is pivotally connected to the toggle levermember 2 at the pivotal point 3 thereof, the upper end of said lever being forked, as shown at 9, and the branches of the fork straddling the toggle lever member This member 2 is provided with a head or enlarged portion 10 and the lever has associated therewith a. clutch or gripping device which can be gripped to the head 'so .that when the lever is turned in the direction of the arrow (1, Fig. l the toggle lever will be broken. In the embodiment shown in Fig 1 this clutch device is in the form of ratchet teeth 11 formed on the head 10 and a pawl 12 carried by the handle 8. The pawl 12 is normally held out of engagement with the ratchet teeth by a spring 13, one end of said spring engaging bridge 14 through which the pawl 12 plays, the other end engaging a collar or pin 15 carried by the pawl. Said pawl 12 is provided with the stem or extension 16 which is connected to the latch or fin or piece 17 pivoted at 18 to the handle. Un er normal conditions the handle 8 can be swung freely about its pivot 3 without operating the toggle lever device. If the latch 17 is depressed, however, the pawl 12 is forced into engagement with the ratchet teeth 11, after which any movement of the handle 8 in the direction of the arrow 0:, Fig. 1, will break the toggle lever and open the door. lAs the door opens the toggle member 2 swings upwardly into the dotted line position Fig. 1 and the handle 8 will have a'corresponding movement relative to the door in the direction of the arrow at. If during this movement the handle gets beyond a convenient position for the operator he can swing the handleback toward the left Fig. 1, and cause the pawl 12 to take a fresh grip on the ratchet 11, as shown in dotted lines Fig. 1.

In lieu of the pawl-and-ratchet construction shown in Fig. 1 I may employ a friction grip device, as shown -in Fig. 2. In

this embodiment, the head 10 is provided with the eccentric friction surface 19 and instead of a pawl 12 a friction block 20 is employed which is secured to the. rod 16 that is connected to the latch 17. Owing to the eccentricity of the surface 19 the swinging movement of the handle 8 to the right, Fig. 1 will cause the block 20 to gri the surface 19 with sufficient friction to break the toggle lever and open the door. I propose to make the handle 8 halfroun'd, as shown in Fig. 3, in which case the pawl and the stem 16 will be received within the contour of the handle and will thus be concealed from view and protected.

While I have illustrated herein a selected embodiment of my invention I do not wish to be limited to the constructional features shown.

I claim:

1. In a door-operating mechanism, the

combination with a sliding door, of a toggle-lever door-operating device pivotally connected to said door and to a fixed abutment, a handle movably sustained by the door and normally disconnected from the toggle-lever device and capable of movement relative thereto without operating said device, and means to clutch said handle to said toggle-lever device whereby movement of the handle will actuate said device.

In a. door-operating mechanism, the combination with a sliding door, of a toggle lever door-operating device comprising two pivotallyconnected members, one of which is pivoted to a fixed abutment, and the other of which is PlX'OtQCI to the door, said latter member having a head, ahandle pivoted to the door, and a clutch device carried by the handle and adapted to engage said head whereby swinging movement Copies 0t this patent may be obtained for of the handle will first break the toggle lever and thenopen the door.

3. Ina door-operating mechanism, the combination with a sliding door, of a toggle-lever door-operating device pivotally connected to said door and to a fixed abutment, a handle pivoted to the door and normally capable of'swinging movement independently from the toggle-lever device, and means carried by the handle to clutch it to the toggle-lever device whereby the latter may be operated by said handle.

4. In a door-operating mechanism, the combination with a sliding door, of a toggle-lever door-operating device pivotally connected to said door and to a fixed abutment, a handle pivoted to the door and normally disconnected from the toggle leverdevice and capable of movement relative thereto without operating said device, and means operable in any position of the handle to clutch it to the toggle-lever device whereby movement of the handle will actuate said device and operate the door.

5. In a door-operating mechanism, the combination with a sliding door, of a toggle-lever door-operating device pivotally connected to said door and to a fixed abutment, a handle pivoted to the door co-axially with the toggle-lever device and normally capable of free swinging movement in both directions independently from the toggle-lever device and means to clutch said handle to said toggle-lever device.

In testimony whereof, I have signed my rame to this specification, in the presenct of two subscribing witnesses.

LEWIS C. NORTON.

Witnesses E. M. CLARK, E. E. BELLEW.

five cents each, by addressing the Commissioner of Patents.

Washington, D. C. 

